Operating Instructions FR(MU)1000 - ziehl.de

Temperature Relays and MINIKA®, Mains Monitoring, Digital Panelmeters MINIPAN®, Switching Relays and Controls 

Operating Instructions FR(MU)1000 

- Frequency- and Revolutions relay 

ZIEHL industrie – elektronik GmbH + Co KG 

Daimlerstraße 13, D – 74523 Schwäbisch Hall 

+ 49 791 504-0, info@ziehl.de, www.ziehl.de 

updated: 121024 Sc 

FR(MU)1000 12460-0701-03 Page 1 / 15 www.ziehl.de

Table of contents 

1 Application and short description ......................................................................................................... 3 

2 Overview of functions ............................................................................................................................ 3 

3 Connecting diagram ............................................................................................................................... 4 

4 Display and operation parts ................................................................................................................... 4 

5 Programs................................................................................................................................................. 4 

6 Important Information ............................................................................................................................ 5 

7 Installation .............................................................................................................................................. 6 

8 Putting into operation ............................................................................................................................ 6 

8.1 Display mode ................................................................................................................................. 6 

8.2 Menu mode (Decimal point behind the last digit ON) ..................................................................... 6 

8.3 Parameter setting mode (Decimal point behind the last digit BLINKS) ........................................... 6 

8.4 Indications of the digital display ..................................................................................................... 9 

9 Operation .............................................................................................................................................. 10 

9.1 Program 1: Pr1 / Speed Monitoring ............................................................................................. 10 

9.2 Program 2: Pr2 / Frequency Monitoring ....................................................................................... 11 

10 Factory setting ...................................................................................................................................... 12 

11 Error search and measures ................................................................................................................. 12 

12 Technical data ...................................................................................................................................... 13 

13 Type V4 ................................................................................................................................................. 15 


1 Application and short description 

The FR(MU)1000 is a speed-monitor, a frequency-monitor and a measuring-transducer (FRMU only) in one 

device. 

2 limits with 1 relay each can be programmed for under- or overspeed or under- or over-frequency or each 

monitoring a range (window min/max). 

The input for monitoring of speed can evaluate signals from proximity-sensors 2- or 3-wire, npn or pnp. The 

display can be scaled. Thus the real speed of a shaft can be displayed, even though there are several 

pulses per revolution, e.g. from a cogwheel. 

Application as Frequency-Relay: 

Monitoring of frequencies in mains 16 2/3 to 400 Hz on maintaining a range (min/max). 

Measuring input voltage (f-in) - AC 80...440 V / AC 20…200 V (Order-number U226134 + U226135) 

- AC 210...830 V / AC 110…300 V (Order-number U226138) 

Application as Speed-Relay: 

Monitoring of overspeed or underspeed, each with pre-alarm and alarm, monitoring of maintaining a range 

(min/max) or monitoring of stop at machines and equipment, e.g. at conveyors, escalators or lifts or for 

monitoring drive-belts. 

Applications as Measuring Transducer: (FRMU only) 

In addition the FRMU1000 can be used as a measuring-transducer to convert the input-signal into a 

standard-signal 0/4-20 mA or 0-10 V. 

2 Overview of functions 

General: 

� Setting in Hz or 1/min 

� 5-digit display 

� 2 limits / 2 relays 

� Programmable for each relay: 

- monitoring of min.-, max.- or window 

- hysteresis 

- autoreset or reclosing lock 

- delay-time for switching and switching back down to 50 ms 

- operating- or closed-current-mode 

� LEDs for state of relay and unit (Hz or 1/min) 

� Storage of min- und max-values of the inputs 

� Easy setting with 3 buttons 

� Enable-input (E1-E2 closed = monitoring not active / open = monitoring active) 

� Code lock against manipulation of settings 

� Universal power supply unit AC/DC 24...240 V 

� Terminals pluggable 

� Analog output DC 0/4-20 mA or DC 0-10 V, 

freely scaleable (with isolation to frequency-input “f – in”), FRMU only 

Frequency: 

� Measuring input voltage - AC 80...440 V / AC 20…200 V (Order-number U226134 + U226135) 

- AC 210...830 V / AC 110…300 V (Order-number U226138) 

� Measuring-input for ZIEHL frequency-sensor STWA 1 FFH 

� Monitoring of frequency of own supply-voltage 

� Monitoring range 10...500 Hz 

� Resolution of display 0,01 Hz 

Speed: 

� Monitoring range 5...99999 1/min 

� Display can be scaled 

� Measuring input for proximity switch, 2- or 3-conductor, PNP or NPN 

� Start-up-delay programmable 

� Enable-input (E1-E2 closed = monitoring not active / open = monitoring active) 


3 Connecting diagram 

4 Display and operation parts 

1 LEDs relay state 

2 Digital display, 5 digits 

3 LED speed measuring (1/min) 

4 LED frequency measuring (Hz) 

5 Pushbutton up 

6 Pushbutton set/reset 

7 Pushbutton down 

5 Programs 

2 programs (Pr) can be selected. Due to these Programs the device can be easily adapted to the 

application. 

Choose the Program fitting to your application and after that change the parameters! When changing the 

program all parameters are reseted upon "factory setting". 

(see chart " factory setting") 

Selecting the program: 

Keep the button "Set" pressed for 10 s when applying the supply voltage. Then program (Pr 1 ... Pr 2) 

can be choosen with the pushbuttons up/down and confirmed with set. 

Pr 1 = Revolutions control (factory setting) (1/min) 

Pr 2 = Frequency control (Hz) 

1) FRMU only 


6 Important Information 

DANGER! 

Hazardous voltage! 

Will cause death or serious injury. Turn off and lock out all power 

supplying this device before working on this device. 

To use the equipment flawless and safe, transport and store properly, install and start professionally and 

operate as directed. 

Only let persons work with the equipment who are familiar with installation, start and use and who have 

appropriate qualification corresponding to their function. They must observe the contents of the 

instructions manual, the information which are written on the equipment and the relevant security 

instructions for the setting up and the use of electrical units. 

The equipments are built according to DIN / EN and checked and leave the plant according to security in 

perfect condition. If, in any case the information in the instructions manual is not sufficient, please contact 

our company or the responsible representative. 

Instead of the industrial norms and regulations written in this instructions manual valid for Europe, you 

must observe out of their geographical scope the valid and relevant regulations of the corresponding 

country. 

Observe the maximum temperature permissible when installing in switching cabinet. 

Make sure sufficient space to other equipment or heat sources. If the cooling becomes 

more difficult e.g. through close proximity of apparatus with elevated surface 

temperature or hindrance of the cooling air, the tolerable environmental temperature is 

diminishing. 

! 

Attention! 

When all relays are programmed in operation current mode (= pick up at alarm), a loss of the 

supply voltage or an instrument failure can remain unidentified. When the relay is applied as 

control instrument, the operator must ensure, that this error is recognized by regular 

examinations. We recommend to program and accordingly evaluate at least one relay in the 

closed-circuit current mode. 

Universal power supply 

The device has got a universal power supply, that is suitable for DC- and AC-voltages. Before connecting 

the device to supply-voltage make sure that the connected voltage corresponds with the voltage on the 

lateral type on the device. 


7 Installation 

The unit can be installed as follows: 

� Installation in switchgear cabinet on 35 mm mounting rail according to EN 60715 

� With screws M4 for installation on walls or panel. (additional latch included in delivery) 

Connection according to connection plan or type plate. 

8 Putting into operation 

Decimal point behind the last digit: 

Off = display mode, displays values of measuring inputs 

On = menu mode, select the menu items 

blinking = parameter setting mode 

8.1 Display mode 

Indication of the current measured value 

LEDs Relay (K1, K2) 

ON = relay picked up 

LED Speed (1/min) / Frequency (Hz) 

ON = according program selected 

Function button UP/DOWN 

Push short change into menu mode 

Push for > 2 s display of the stored MIN- or MAX- 

values of the choosen input 

Function button SET/RESET 

Push for 2 s Reset restart interlock 

Push for 4 s display of the choosen program 

Push for 10 s display of the software version 

8.2 Menu mode (Decimal point behind the last digit ON) 

Selection of the menu items for changing the parameters. 


Push short Selection of menu item; Change into display mode 


Push short Change into parameter setting mode 

8.3 Parameter setting mode (Decimal point behind the last digit BLINKS) 

LEDs indicate relays concerned by the parameter setting. 


Press short/long Changement of parameter value (slow/fast) 


Press short Acceptation of setting and choice of next parameters, 

after the last parameter change into menu mode 

Selecting the inputs (Inpvt): 

Choose menu item with up/down until InpVt and type alternate in display. 

Here it can be read, which input is selected. 

Enter in programming with Set. 

Select input with up/down and store with Set. 

Multiplier/divisor (Mvlt / div) : 

The indicated or limit value is calculated from the formula: input * Mvlt / div 

Mean value (SvM): 

Valid measured value = mean value from 1...8 (SvM) measuring cycles. 


Setting the alarms (AL 1 / AL 2): 

Choose menu item with up/down until AL 1 and limit (limit value) alternate. 

Here it can be read clearly which limit value is programmed. 

Begin to program with set. 

Set limit with up/down and store with set. At window monitoring, this value is the lower limit of the 

window. 

Choose function: 

off Alarm OFF, relay is released all the time 

•:∆ Overspeed / overfrequency without reclosing lock 

•:: Overspeed / overfrequency with reclosing lock. Reset only possible after signal is below the limit 

(with hysterisis) and after the switchback-delay. The switchback-delay is indicated with blinking 

„A12L“ in the display. 

w_r Underspeed / underfrequency without reclosing lock 

w__ Underspeed / underfrequency with reclosing lock. Reset only possible after signal is below the 

limit (with hysterisis) and after the switchback-delay. The switchback-delay is indicated with blinking 

„A12L“ in the display.. 

«k Window monitoring without reclosing lock. 

«« Window monitoring with reclosing lock. Reset only possible after signal is within the window (with 

hysterisis) and after the switchback-delay. The switchback-delay is indicated with „A12L“ in the 

display. 

ALHi upper limit at window monitoring. Lower limit = AL 1 set limit. 

Set Hysteresis 

Alarm delay time dAL: An alarm is suppressed for this time, short-time exceeding of the limits does not 

cause an alarm. 

Switch-back delay doF: Alarms are switched off this time after the signal has returned into good-state. 

Function of relay: 

r-Closed-current circuit mode. Relay is picked up in GOOD and releases when the limit is exceeded = 

alarm. Advantage: errors and faults normally cause an alarm. Disadvantage: alarm also when 

supply-voltage is switched off and after switching on until the relay has picked up. 

A- Operating-current mode: relay is released in GOOD state and picks up when the limit is exceeded. 

No alarm at errors and when supply-voltage is switched off. 

Start-up-delay (dEnab): 

Monitoring starts this time after switching on the supply-voltage and after opening the enable -input E1- 

E2. 

Display delay (ddisp): 

Defines the rate for updating the display. Set to higher values at nervous display. 

Simulation (Si): 

Here a measured input signal can be simulated with the buttons up/down. All functions of the device 

work as if this value was at the input. If no button is pressed for 15 minutes the device automatically 

switches back into the display mode. 

Code-lock (CodE): 

After setting all parameters they can be protected by activating the code lock. After pushing Set, the 

display indicates Pin. 

Adjust with buttons up/down Pin 00504 (factory setting). After pushing Set, code lock can be 

activated or switched off. After pushing Set again, an individual Pin can be selected (write down). 

When code lock is activated all parameters can be seen but not be changed anymore. 

In case of problems with the code lock (forgotten Pin) the lock can be switched off 

and the Pin can be set back to 00504, by pushing button set while connecting the 

device to supply-voltage until Cod / ofF is indicated in the display. 


Tips: 

- With the pre-setting Pr1 and Pr2 the most important parameters can be set in advance, so that only little 

modifications are necessary , e.g. setting of the limits (limit values) for each alarm. 

- When the right decimal point in the 7 segment display is on, the display mode has been left, and the 

menu items can be chosen with up/down (menu mode). 

- When the right decimal point blinks, you are in the parameter setting mode and can change the setting 

with up/down. 

- After finishing one menu item it is switched automatically on the next one. 

- Long pushing on up/down speeds up the changes in the display. 

- Pushing button up and down at the same time sets values to zero. 

- With reset (press Set/Reset for 2s) the display mode can be reached from every position (exception: 

simulation) of the parameter setting mode (the last selected value in is being stored). 


8.4 Indications of the digital display 

Pr 1 / Pr 2 program number 

A1 , A2 alarm 1 , alarm 2 active 

A12 alarm 1 and alarm 2 active 

+ L alarm locked (locked), „reset“ is necessary. 

DEn 

remaining time until monitoring is activated 

(start-up-delay dEnab is ending) 

Inpvt input 

U1-U2 frequency input (f - in) 

npn three wire proximity-switch NPN 

pnp three wire proxy-switch PNP or two wire proxy-switch 

mvlt multiplier 

div divisor 

Svm mean value 

AL 1, AL 2 alarm limit (lower limit when monitoring a window) 

Fvnc alarm function 

off alarm off 

•:∆ overspeed / over frequency without reclosing lock 

•:: overspeed / over frequency with reclosing lock. 

w_r underspeed / under frequency without reclosing lock 

w__ underspeed / under frequency with reclosing lock 

«k window monitoring without reclosing lock 

«« window monitoring with reclosing lock 

alhi upper limit when monitoring a window 

H hysterisis 

dal switching-delay 

doF switch-back-delay 

rEl function of relay 

r closed-current mode, contacts 11-12 resp. 21-22 close at an alarm 

A operating-current mode, contacts 11-14 (21-24) close at an alarm 

denab start-up-delay 

ddisp display delay 

on, oFF on/off 

Si simulation 

CodE code (pin) 

Pin ex works 00504 

FRMU only: 

ovt analog output 

0-10 0...10 V voltage output 

0/4-20 0/4...20 mA current output 

____ value for 0 V, 0/4 mA at the output 

,,,, value for 10 V, 20 mA at the output 


9 Operation 

9.1 Program 1: Pr1 / Speed Monitoring 

Menu mode 

FRMU 

only 

2 s = Max 

2 s = Min 

Inpvt 

mvlt 

div 

Svm 

AL 1 

AL 2 

denab 

ddisp 

ovt 

CodE 

Display 

Si 

Typ 

Value 

Value 

Value 

Limit 

Limit 

Value 

Value 

Typ 

on / 

oFF 

.... 

Pin 

U1-U2 

nPn 

pnp 

00001 

00250 

00001 

00250 

00001 

00008 

00005 

...99999 

0000.0 

...0060.0 s 

0000.1 

...0002.0 s 

oFF 

0-10 

0-20 

4-20 

00000 

...99999 

00000 

...09999 

Display mode 

Parameter setting mode 

fvnc off 

____ ,,,, 

3x Err 

00000 

...99999 

o.k. 

•:± 

•:: 

w_r 

w__ 

«k 

«« 

on 

oFF 

00000 

...99999 

Zero Fullscale 

3x on / oFF 

FR(MU)1000 12460-0701-03 Page 10 / 15 www.ziehl.de 

alHi 

Pin 

00005 

...99999 

dAL 000.05 

..099.99 s 

00000 

...09999 

H 

00001 

...10000 

doF 000.05 

..099.99 s 

Operation with pushbuttons: 

Up 

Down 

rEL rA 

Set 

Reset 

= >2s Set 

Up/down at same time sets values 

on zero. 

Code-reset = 2 s set while switching 

in. 

(Pin = 00504) 

error messages: 

Er 9 = device error 

Err = general error 

EEE = superordinated range

9.2 Program 2: Pr2 / Frequency Monitoring 

Menu mode 

FRMU 

only 

2 s = Max 

2 s = Min 

Inpvt 

Svm 

AL 1 

AL 2 

denab 

ddisp 

ovt 

CodE 

Display 

Si 

Typ 

1...8 

Limit 

Limit 

Value 

Value 

Typ 

on / 

oFF 

.... 

Pin 

U1-U2 

nPn 

pnp 

00001 

00008 

010.00 

...500.00 

0000.0 

...0060.0 s 

0000.1 

...0002.0 s 

oFF 

0-10 

0-20 

4-20 

010.00 

...500.00 

00000 

...09999 

Display mode 

Parameter setting mode 

fvnc off 

____ ,,,, 

3x Err 

000.00 

...500.00 

o.k. 

•:± 

•:: 

w_r 

w__ 

«k 

«« 


on 

oFF 

alHi 

Pin 

010.00 

...500.00 

dAL 000.05 

..099.99 s 

000.00 

...500.00 

Zero Fullscale 

00000 

...09999 

H 

3x on / oFF 

000.10 

...010.00 

doF 000.05 

..099.99 s 

Operation with pushbuttons: 

Up 

Down 

rEL rA 

Set 

Reset 

= >2s Set 

Up/down on same time sets values 

on zero. 

Code-reset = 2 s set while switching 

in. 

(Pin = 00504) 

error messages: 

Er 9 = device error 

Err = general error 

EEE = superordinated range

10 Factory setting 

In case of programme change all parameters are set back on factory setting. 

Menuitem 

Parameter 

Value 

Pr 1 Pr 2 

Inpvt Input type PnP U1-U2 

mvlt Multiplier 1 - 

div Divisor 1 - 

svm Mean value 4 4 

Alarm 1 

AL 1 

Alarm 2 

AL 2 

Limit 1 (lower window limit) 500 48Z00 

Fvnc (Function) w_r «k 

alHi (upper window limit) - 52Z00 

H (Hysterisis) 10 1Z00 

dAL (Alarm-delay) 0Z50 0Z10 

dof (Switch-back delay) 0Z50 0Z10 

rel (Relais function) r r 

Limit 2 (lower window limit) 5000 47Z00 

Fvnc (Function) •:∆ «k 

alHi (upper window limit) - 53Z00 

H (Hysterisis) 100 1Z00 

dAL (Alarm-delay) 0Z50 0Z10 

dof (Switch-back delay) 0Z50 0Z10 

rel (Relais function) r r 

denab Start-up-delay 2Z0 0Z1 

ddisp Display delay 0Z5 0Z5 

ovt Type 0-10 0-10 

(nur ____ (Zero) 0 0.00 

FRMU) ,,,, (Fullscale) 5000 100Z00 

Code 

on / oFF 

Pin 

off 

00504 

off 

00504 

Indication of software version: push „Set“ 10 s in display mode. 

11 Error search and measures 

My 

data 

Device cannot be programmed – Code lock 

The code lock gives protection against unauthorized manipulation of the device. When code lock is 

activated the parameters can not be changed. The pin can be typed in by the user. 

Pin unknown? Make code-reset: When switching in supply-voltage keep pushed button „Set“ for 2 s. 

Display shows: "88888"; "CodE"; "oFF"; "88888" release button „Set“. 

Code = oFF, Pin = 00504. 

Indicated value does not correspond to input signal 

Correct program chosen? 

Input type (Inpvt) selected correct? 

Multiplier and divisor programmed correct when monitoring speed (PR 1)? 

Indication „Er9“ 

Er9 is an internal fault of the device. Switch off- and on the power-supply. 

If after that there still is an error indicated, the unit must be sent to the factory for repair. 


12 Technical data 

Rated supply voltage Us: AC/DC 24 – 240 V 

Tolerance DC 20,4 - 297 V AC 20 - 264 V 

Frequency 0, 40...500 Hz, from AC 80 V: 10...500 Hz 

Input < 3 W < 10 VA 

Relay-output: 2 x 1 Changer (CO) 

Switching voltage max. AC 400 V 

Switching current max. 5 A 

Switching power max. 1250 VA (ohm resistive load) 

max. 48 W at DC 24 V 

Nominal operating current Ie: 

AC15 Ie = 1,25 A Ue = 400 V 

Ie = 2 A Ue = 250 V 

DC13 Ie = 2 A Ue = 24 V 

Recommended fuse T 3,15 A (gL) 

Contact life mechanic 15 x 10 6 Switching cycles 

Contact life electrical. 2 x 10 5 Switching cycles at AC 250 V / 3 A 

5 x 10 5 Switching cycles at AC 250 V / 2 A 

1 x 10 5 Switching cycles at AC 250 V / 0,8 A 

Test conditions EN 60255 / EN 60947 

Rated impulse voltage 4000 V 

- measuring input f-in 4000 V -> Order-number U226134 + U226135 

6000 V -> Order-number U226138 

Contamination level 2 

Rated insulation voltage Ui 300 V 

- measuring input f-in 300 V -> Order-number U226134 + U226135 

600 V -> Order-number U226138 

On-time 100 % 

Permitted ambient air temperature -20 °C ... +60 °C 

EN 60068-2-2 dry heat 

Interference resistance EN 61000-6-2 

Interference transmission EN 61000-6-3 

Vibration resistance EN 60068-2-6 2…25 Hz ±1,6 mm 

25 ... 150 Hz 5 g 


Measuring inputs 

f-in -> Order-number U226134 + U226135 Frequency 10,00 ... 500,00 Hz 

� admissible voltage AC 20...200 V 


f-in -> Order-number U226138 Frequency 10,00 ... 500,00 Hz 



Three wire - PNP UMax 28 V; switching threshold approx. 10 V 

Three wire - NPN 18 V / 3,5 mA; switching threshold approx. 9 V 

Two wire- proximity switch 18 V / 3,5 mA ( 24 V DC ) 

Switching threshold approx. 1,5 mA 

Switching frequency max. 1,6 kHz; 99999 1/min 

Cable length for proximity switch PNP, NPN, 2-wire 

Resistance of line ≤ 10 Ω / line 

Capacity of line ≤ 22 nF 0…800Hz; ≤ 10 nF 800...1600 Hz 

e.g. max. length of cable < 150 m with cable LIFYY11Y 3*0,34 mm 

at 0…800Hz 

Measuring error ± 0,05 % of measured value ± 1 Digit 

Temperature factor < 0,002 %/K 

Measuring time 1 Period * Svm (number mean values) 

>= 3 Periods; after placing the measuring signal 

Auxiliary supply +18 V 20 mA 16 ... 21 V max. 20 mA 

Enable E1-E2 18 V / 3 mA Switching threshold approx. 9 V 

Analogue output: (FRMU only) electrically insulated to input f - in (U1-U2) 

Voltage output 0...10 V max. 10 mA error

61,8 

13 Type V4 

Dimensions in mm 

45 

58 

48 

16,5 

1 2 3 

1 Cover 

2 Base 

3 Bar for snap mounting 

4 Latch for sealing 

5 Front panel 

6 Position downward 

7 For fixing to wall with screws, Ø 4,2 mm. 

3 

(90) 

4 

Sie finden diese und weitere Betriebsanleitungen, soweit verfügbar auch in englisch, auf unserer Homepage 

www.ziehl.de. 

You find this and other operating-manuals on our homepage www.ziehl.de, as far as available also in 

English. 


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Operating Instructions FR(MU)1000 - ziehl.de

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